I'd say this guy is brilliant. And that you managed to stay entirely out of his way. That is no small accomplishment, when you consider that you are actively engaged in lighting, setting up and running sound, directing, and -- to a completely unknowable extent -- coaching and structuring his flow of thought through questions. Even the moves on still photos show disciplined restraint so that they don't call attention to the effects. If we were still using tape, this one would go on the reel.